Stencil-making device for type-writing, machines.



L. C. MYERS.

STENCIL MAKING DEVICE FOR TYPE WRITING MACHINES.

APPLICATION FILED MAY 3 I915.

Patented Oct; 23, 1917.

WITNESSES:

, ZZZ 1M Making Device for'Type-Writing ordinary machine type, and to move'it, for

parts of a LEWIS C. 1\1IYZE1RS,'OF BROOKLYN, NEW YORK, ASSIGNOR TO ROYAL TYPEWRITER COMPANY, 1120;, on NEW YORK, n:

Y., A-CORPORATION OF NEW YORK.

STENCIL-MAKING DEVICE FOR TYPE-W RITINGIMACHIINES.

To all whom it may concern:

vBe'it lmown'that LLEWIQ' C. MYERS, a citizen of the United States-of America,'-residing in the borough of Brooklyn, county of Kings, vented a certain new and useful Stenc1l- Machines,

of which the following is a speclfication.

The stencil makingdevice of this inven-' tion embodies a structure adapted to hold the stencil flat while beingprinted on a visible printing ty'pewriting machme by the line spacing-etc, in a tangential direction relative to the" rotary bed or platen which receives the impact of the type on the stencil. It also embodies means or feeding and controlling aninkribbon arranged to cover the part of the platen, behind the stencil.

n the drawings which any teams this invention:

Fi ure 1 is a front elevation of the stenoil holder, etc.,' and the allied operating typewriting machine of the well kngwh Royal type 2" mechanism shown in Fig. 1:

Fig. 3, a vertical section on the line 3, 3, of Fig.1:

Fig. 4, a view showing a part of the ribbon controlling device: and

Fig. 5, a transverse section of the printing bed.

I The ordinary parts of the Royal type writer illustrated are the bed 5, or upper rail of the guide way, of the carriage, the lower rail 6 of the guide way; the end frames 7 of the carriage the platen 8,; the line spacing lever 9; and the connected platen controlling devices 10.

v The stencil holding frame guides ,11 are secured by screws 12 to the upper rail 5 of the carriage guide way, their lower endsbemg offset to properly locate them and af-,

ing upwardly along their front faces, in-

such manner as to insure an adequate grip f on the stencil and hold it in the frame. The

outer edges of the side parts 13 are formed Specification of'Letters Patent. Application filed may 3,

and State of New York, have in- Jiflg. 2, a right hand end view of the most position, see Fig.

. proJecting from the hub 1. The stencil frame com-.

two flat springs 15 fastened to the 1915. Serial No. 25,408.

with rack 'teeth 1 which. mat into 39g mental gears 17 concentric with the platen and located at the ends of the printing'bed to aline with the rack teeth 16. Stencils adapted to be made on typewriting machines usually consist of particularly prepared thin paper generally surrounded border of stifier material.

It is desirable to provide a means for limiting the upward and downward positions of the stencil frame. In upper 'posig' the side parts 13. strike a stencil has been putin 15, the platen is rotated contacts'with an adjustable stop 21 secured to the end frame 7 "of the carriage, the frame 13,14, and stenc'l then being in lower- 3. After thes tencil is finished, or at any be raised to its uppermost position'by pushing the lever fully back. 1

of the lever, then contacts with the stop 21, as shown in full lines, Fig. 2.

Patented Oct. as, 1917. I

by a frame or g. 2. Thisopens the the completed stencil" down into printing posi-f has an arm 20 projecting from its hub which other time, it may The arm 22, also The stencil characters are made clearly perceptible as they are impressed by the type over the ink ribbon 23, which coversthe printing bed of the platen, by the ink therefrom showing through the punctures in the stencil made by the type. This ribbon is carried on a spool 24 whose shaft ,has 'bearings in secured to a bar 26 and extend in an an lar rearward direction. The bar 26 extends between and'is secured'to the side frames 7 of the carriage. It is'simila r to, and may be used as, the paper pancarrying bar of the. typewrit machine when fitted for ordinary plate frames 25., and these frames are ing. Between the ribbon spool 24 and the platen is a winding u'proller or spool .27

whose shaftor bearing studs rest in slotted holes 28 formed inthe plates 25.- This-roller or spool 27 is rotated'bya friction disk 27 which contacts with the platen and sowinds up the ribbon23 which passes around the platen from the spool 24. A spring 35 held on the plate 25 acts on the shaft of spool 27 to press it toward the platen. Retrograde movement of the when the platen is being set back by the hand lever 19, is prevented by the pawl 29 which is held against the ratchet 30 of the spool 27 by a spring 31. A small bell crank lever, pivoted to the frame 25, has one of its limbs 32 in front of the end of the shaft of the spool 27, its other limb 33 being located over the end of the pawl 29. This pawl 29 has an upwardly extending thumb piece 34; by means of which the pawl may be moved away from the ratchet 30 and so raise the limb 33 of the bell crank lever, thus causing the limb 32 to move the spool 27 away from the platen, as shown at Fig. 4:. This will permit the ribbon from spool 27 to be rewound on the spool 24, by its manipulating knob 36.

It is advantageous in typewriting machines to stencil making that the platen bed receiving the impact of the type be of a special character and readily renewable. To provide such a bed it' is found that celluloid is a suitable .material, and it may be applied to the active platen 37 as shown in Fig. 5. A sheet 38 of suitable material, as celluloid, of sufficient area to cover the printing part of the platen 37, is held in place by its upper and lower edges being slipped undercleats 39 secured to the platen. When worn such a sheet may be quickly replaced by a new one. The parts 8 of the platen shown in Fig. 1 may, of course, in this use of the typewriter be omitted as they then perform no function.

I claim:

1. In a stencil making device for type- Writing machines, a rotatable platen, vertithe application of cal guide frames rigidly secured to the bed of the carriage and located in front of the platen, a stencil holding frame fitted to slide between and in contact with the inner sides of the guide frames and an operating connection between the platen and stencil frame.

2. In a stencil making device for. typewriting machines, a rotatable platen, a line spacing lever and its platen actuating connections, vertical'guide frames rigidly secured to the bed of thefcarriage and located in front of the platen, a stencil holding frame located between and fitted to slide against the inner sides of the guide frames and I an operating connection between the platen and stencil frame whereby the stencil frame is vertically moved when the platen is rotated by the line spacing lever.

3. In a stencil making device for typewriting machines, a rotatable platen, vertical guide frames rigidly secured to the bed of-the carriage and located in front of the winding-up spool,

platen, a stencil holding frame located between and fitted to slide against the inner sides of the guide frames, an operating connection between the platen and frame and ahand lever secured to the platen shaft and adapted to rock the platen to set the stencil holding frame in its upper and lower positions.

4:. In a stencil making device for typewriting machines, a rotatable platen, vertical guide frames secured to the bed of the carriage and located in front of the platen, a stencil holding frame fitted to slide against the inner sides of the guide frames, an operating connection betweenthe platen and stencil frame, a hand lever secured to the platen shaft and provided with two arms at its hub and a stop on the carriage frame against which the arms strike to limit the movement of the platen, said hand lever being adapted to rock the platen to set the stencil holding frame in its upper and lower positions.

5. In a stencil making device for typewriting machines, a rotatable platen, vertical guide frames secured to the bed of the carriage and located in front of the platen, a stencil holding frame fitted to slide against the inner sides of the guide frames comprising two side parts, a connecting bar at their upper ends, springs adjacent the front side of the side parts and attached to their lower ends and an operating connection between the platen and stencil frame.

6. In a stencil making device for typewriting machines, a rotatable platen, vertical guide frames secured to the carriage and located in front of the platen, a stencil holding frame fittedto slide against the inner sides of the guide frames comprising two side parts, a connecting bar at their upper ends, springs adjacent the front side of the side parts and attached to their lower ends, pins at the upper ends of the guide frames against which the upper part of the stencil frame presses and moves away from the springs when it is in upper position, and an operating connection between the platen and stencil frame.

7 In a stencil making device for typewriting machines, a rotatable platen, vertical guide frames secured to the bed of the carriage and located in front of the platen, a

stencil holding; frame comprising side pieces and a connecting top piece fitted to slide between and in contact with the inner sides of the guide frames and having rack teeth formed in its side edges, and gears on the platen meshing into said rack teeth.

8. In a stencil making device for typewriting machines, a rotatable platen, vertical guide frames secured to the carriage and located in front of the platen, astencil holding frame fitted .to slide against the inner sides of the guide frames and having rack stencil teeth formed in its side edges, gears on the platen meshing into said rack teeth, a hand lever secured. to the platen shaft and provided with two arms at its hub, and an adjustable stop on the carriage frame against which the arms contact said hand lever being adapted to rock the platen to set the stencil holding frame in its upper and lower positions.

9. A typewriter stencil making device, comprising a rotary platen, a carriage in which the platen is supported, an adjustable stencil holder located in front of the platen and supported by said carriage, a stencil carried by the holder, and an ink carrier supported independently of the platen and located between the stencil and the platen.

10. A typewriter stencil-making device, comprising a rotary platen, a carriage in which the platen is supported, an adjustable stencil holder located in front of the platen, a stencil carried by the holder, an ink carrier located between the stencil and the platen, and means operable independently of the movement of the platen for moving the ink carrier relatively to the line of print.

11. The combination with a rotary platen, of a stencil holder associated with the platen,

means for moving the stencil holder relatively to the line of print, a stencil carried by the holder, an ink-ribbon interposed between the stencil and the platen, a spool on which the ribbon is wound and from which it is drawn around the platen and between the platen and the stencil, a winding-up roll for the ribbon, and means yieldingly connecting said winding-up roll with the platen whereby the former is driven by the latter.

12. The combination with a rotary platen, of a stencil holder associated with the platen, means for moving the stencil holder relatively to the line of print, a stencil carried by the holder, an ink-ribbon interposed be-' tween the stencil and the platen, a spool on which the ribbon is wound and from which it is drawn around the platen and between the platen and the stencil, a winding-up roll for the ribbon, means connecting said winding-up roll with the platen whereby the former is driven by the latter, and means for connecting and disconnecting the windingup roll and platen.

13. The combination of a rotary platen, a carriage on which it is mounted, stencil guide frames secured to the carriage, a stenstencil holder arranged tangentially to the platen and vertically adjustable relatively thereto, and springs interposed between the guide frames andthe stencil-holding frame and attached to the latter for holding the stencil in place in its frame.

15. The combination of a rotary platen, its carriage, a stencil guide frame attached centrally thereto, a stencil-holding frame mounted to slide on said guide frame, means for moving said stencil-holding frame, and" means carried by the guide frame forrmoving the stencil-holding frame rearwardly away from said guide frame at its upper end as the stencil-holding frame rises on the guide frame.

16. The combination of a rotary platen, a carriage in which it is mounted, a stencil guide frame attached to the carriage, stencil holding springs carried thereby, means for, moving the stencil-holding frame in its guide frame, and means carried by the guide frame for moving the stencil-holding frame rearwardly as said frame is moved in its guide frame. t

17. A typewriter stencil making device, comprising a shifting rotary platen provided with a removable impact surface, a carriage in which the platen is supported, a stencil-holder located in front of the platen, an ink carrier located between the stencil and the impact surface of the platen, automatically controlled means for moving said ink carrier in one direction, and independently operable means for moving the ink carrier in the other direction.

In testimony whereof, I have hereunto subscribed my name..

. LEWIS G. MYERS. Witnesses: I v

E. S. HERB, GEORGE F. HANDLEY, 

